Makefile and developer docs (#53)

* add built binary to .gitignore

* create makefile

* create developer docs

* quote ignored jobs

* new line

* use macos build agent

* use ubuntu; update importer install cmd

.github/workflows/documentation-ci.yaml

@@ -18,8 +18,14 @@ jobs:
         with:
           fetch-depth: 0
 
+      - name: Setup Go
+        uses: actions/setup-go@v3
+        with:
+          go-version: ">=1.18.0"
+          check-latest: true
+
       - name: Install Importer
-        run: brew install upsidr/tap/importer
+        run: go install github.com/upsidr/importer/cmd/importer@v0.1.4
 
       - name: Run Importer against all *.md files
         run: find . -name '*.md' -exec importer update {} \;

.gitignore

@@ -13,3 +13,6 @@
 
 # Dependency directories (remove the comment below to include it)
 # vendor/
+
+# Built binary
+merge-gatekeeper

Makefile

@@ -0,0 +1,19 @@
+TOKEN=${GITHUB_TOKEN}
+REF=main
+REPO=upsidr/merge-gatekeeper
+IGNORED=""
+
+go-build:
+	GO111MODULE=on LANG=en_US.UTF-8 CGO_ENABLED=0 go build ./cmd/merge-gatekeeper
+
+go-run: go-build
+	./merge-gatekeeper validate --token=$(TOKEN) --ref $(REF) --repo $(REPO) --ignored "$(IGNORED)"
+
+docker-build:
+	docker build -t merge-gatekeeper:latest .
+
+docker-run: docker-build
+	docker run --rm -it --name merge-gatekeeper merge-gatekeeper:latest validate --token=$(TOKEN) --ref $(REF) --repo $(REPO) --ignored "$(IGNORED)"
+
+test:
+	go test ./...

docs/developer-guide.md

@@ -0,0 +1,50 @@
+# Working with Merge Gatekeeper locally
+
+## Requirements
+
+- [`go` >= 1.16.7](https://go.dev/doc/install)
+- [A valid github token with `repo` permissions](https://github.com/settings/tokens)
+- [make](https://en.wikipedia.org/wiki/Make_(software))
+
+## Useful but not required
+
+- [`docker`](https://docs.docker.com/engine/install/)
+  - required for building and running via docker
+
+## Building Merge Gatekeeper
+
+Using the [`Makefile`](./../Makefile) run the following to build:
+```bash
+# build go binary
+make go-build
+
+# build docker container
+make docker-build
+```
+
+## Running Merge Gatekeeper
+
+it is recommend to export you [github token with `repo` permissions](https://github.com/settings/tokens) to the environment using
+```bash
+export GITHUB_TOKEN="your token"
+```
+otherwise, you will need to pass your token in via
+```bash
+GITHUB_TOKEN="your token" make go-run
+```
+
+Using the [`Makefile`](./../Makefile) run the following to run:
+```bash
+# build and run go binary
+make go-run
+
+# build and run docker container
+make docker-run
+```
+
+## Testing
+To test, use the makefile:
+
+```bash
+make test
+```